package org.tomcat.unit3;

import javax.servlet.ServletOutputStream;
import javax.servlet.ServletResponse;
import java.io.*;
import java.util.Locale;

public class HttpResponse implements ServletResponse {

    private static  final int BUFFER_SIZE = 1024;
    HttpRequest request;
    OutputStream output;

    String WEB_ROOT = "D:/ideaspace/tomcat-demo/out/production/tomcat-demo/org/tomcat/unit2";
    public HttpResponse(OutputStream output) {
        this.output = output;
    }

    public void setRequest(HttpRequest request) {
        this.request = request;
    }

    public void sendStaticResource() throws IOException {
        byte[] bytes = new byte[BUFFER_SIZE];
        FileInputStream fis = null;
        try {
            File file = new File(WEB_ROOT, request.getUri());
            if (file.exists()) {
                fis = new FileInputStream(file);
                int ch = fis.read(bytes, 0, BUFFER_SIZE);
                while (ch != -1) {
                    output.write(bytes, 0, ch);
                    ch = fis.read(bytes, 0, BUFFER_SIZE);
                }
            } else {
                String errorMessage = "HTTP/1.1 404 File Not Found\r\nContent-Type: text/html\r\n" +
                        "Content-Length:23\r\n\r\n<h1>File Not Found</h1>";
                output.write(errorMessage.getBytes());
            }
        } catch (Exception e) {
            System.out.println(e.toString());
        } finally {
            if (fis != null) {
                fis.close();
            }
        }
    }

    @Override
    public String getCharacterEncoding() {
        return null;
    }

    @Override
    public String getContentType() {
        return null;
    }

    @Override
    public ServletOutputStream getOutputStream() throws IOException {
        return null;
    }

    @Override
    public PrintWriter getWriter() throws IOException {
        PrintWriter writer = new PrintWriter(output, true);
        return writer;
    }

    @Override
    public void setCharacterEncoding(String s) {

    }

    @Override
    public void setContentLength(int i) {

    }

    @Override
    public void setContentType(String s) {

    }

    @Override
    public void setBufferSize(int i) {

    }

    @Override
    public int getBufferSize() {
        return 0;
    }

    @Override
    public void flushBuffer() throws IOException {

    }

    @Override
    public void resetBuffer() {

    }

    @Override
    public boolean isCommitted() {
        return false;
    }

    @Override
    public void reset() {

    }

    @Override
    public void setLocale(Locale locale) {

    }

    @Override
    public Locale getLocale() {
        return null;
    }
}
